One of the beastliest mainstream desktop processors you can buy right now is AMD’s Ryzen 9 3900X. Calling it a ‘mainstream’ part is strictly a technicality, because with 12 cores and 24 threads at its disposable, the Ryzen 9 3900X is one heck of a multi-threaded workhorse. As if the sheer number of cores and threads was not enough, however,